Unitarianism is a nontrinitarian branch of Christianity. Unitarian Christians affirm the unitary nature of God as the singular and unique creator of the universe, believe that Jesus Christ was inspired by God in his moral teachings and that he is the savior of humankind, but he is not equal to God himself.
Ferenc Dávid holding his speech at the Diet of Torda (1568), in the Kingdom of Hungary (today Turda, Romania). Painting by Aladár Körösfői-Kriesch (1896).
"God is One" (Egy az Isten) stained glass window in a Unitarian church in Budapest, Hungary.
Fausto Sozzini was an Italian theologian who helped define Unitarianism and also served the Polish Brethren church.
Constantine I burning Arian books, illustration from a book of canon law, c. 825.
Nontrinitarianism is a form of Christianity that rejects the mainstream Christian theology of the Trinity—the belief that God is three distinct hypostases or persons who are coeternal, coequal, and indivisibly united in one being, or essence. Certain religious groups that emerged during the Protestant Reformation have historically been known as antitrinitarian.
Horus, Osiris, and Isis
Altar depicting a tricephalic god identified as Lugus